@use "core/functions" as *;
@use "core/mixins" as *;

.fixed-buttons {
  position: fixed;
  inset-inline-end: 1.5rem;
  bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  @include z-index(fixed, -10);
}

.fixed-button {
  font-size: 1rem;
  line-height: 1.5rem;
  padding: 0.5rem 0.625rem;
  color: fi-var(global-font-secondary-color);
  transition: color 0.4s ease;
  background-color: light-dark(#f1f1f1, #1e1e1f);
  @include border-radius(full);

  &:hover,
  &:active,
  &:focus {
    outline: none;
    color: fi-var(global-font-color);
  }

  @include media('print') {
    display: none !important;
  }
}

.back-to-top {
  overflow: hidden;
  position: relative;
  @include set-fi-vars((
    // Ring stroke width
    b2t-stroke: 0.5rem,
    // Progress color
    b2t-prog: light-dark(fi-var(success), fi-var(global-font-color)),
    // dasharray = circumference = 2πr
    // dashoffset = circumference * (1 - scrollPercent / 100)
    b2t-dasharray: 314.15
  ));

  // SVG circular progress ring
  svg {
    position: absolute;
    top: 0;
    inset-inline-start: 0;
    width: 100%;
    height: 100%;
    // Rotate to start from top
    rotate: -90deg;
  }

  .bg {
    fill: none;
    stroke: fi-var(global-border-color-light);
    stroke-width: fi-var(b2t-stroke);
  }

  // Progress ring
  .progress {
    fill: none;
    stroke: fi-var(b2t-prog);
    stroke-width: fi-var(b2t-stroke);
    stroke-linecap: round;
    stroke-dasharray: fi-var(b2t-dasharray);
    stroke-dashoffset: calc(#{fi-var(b2t-dasharray)} * (1 - #{fi-var(b2t-progress, 0)} / 100));
    transition: stroke-dashoffset .1s linear;
  }
}